System and method for an eddy-current field compensation in magnetic resonance imaging
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorsBo Li, Erwei Jia, Xiaocong Xing, Kaipin Xu
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Abstract
A system and method for acquiring a calibrated eddy-current field model in magnetic resonance imaging (MM) are provided. The method may include one or more of the following operations. An eddy-current field model may be obtained. The eddy-current field model may be transformed by Laplace Transformation. Data of an eddy-current field may be obtained. The data of the eddy-current field may be processed. A calibrated eddy-current field model may be acquired. In addition, the calibrated eddy-current field model may be used to compensate an eddy-current field.
Claims20
A system, comprising:
- at least one storage device storing executable instructions, and
- at least one processor in communication with the at least one storage device, when executing the executable instructions, causing the system to perform operations including:
- obtaining eddy-current data of an eddy-current field;
- performing a transformation operation on the eddy-current data of the eddy-current field to obtain transformed eddy-current data of the eddy-current field;
- determining, based on the transformed eddy-current data, one or more initial values of one or more eddy-current parameters of an eddy-current field model;
- determining, based on the one or more initial values of the one or more eddy-current parameters, one or more target values of the one or more eddy-current parameters;
- and
- calibrating the eddy-current field based on the eddy-current field model with the one or more target values of the one or more eddy-current parameters.
A system, comprising:
- at least one storage device storing executable instructions, and
- at least one processor in communication with the at least one storage device, when executing the executable instructions, causing the system to perform operations including:
- obtaining eddy-current data of an eddy-current field;
- performing a transformation operation on the eddy-current data of the eddy-current field to obtain transformed eddy-current data of the eddy-current field;
- determining, based on the transformed eddy-current data of the eddy-current field, one or more target values of one or more first parameters associated with the transformed eddy-current data;
- determining, based on the one or more target values of the one or more first parameters, one or more target values of one or more second parameters of the eddy-current data, wherein the one or more second parameters correspond to the one or more first parameters and include one or more eddy-current parameters;
- determining an eddy-current field model including the one or more target values of the one or more second parameters;
- and
- calibrating the eddy-current data based on the eddy-current field model.
A method implemented on a computing device having at least one processor and at least one storage device, the method comprising:
- obtaining eddy-current data of an eddy-current field;
- performing a transformation operation on the eddy-current data of the eddy-current field to obtain transformed eddy-current data of the eddy-current field;
- determining, based on the transformed eddy-current data, one or more initial values of one or more eddy-current parameters of an eddy-current field model;
- determining, based on the one or more initial values of the one or more eddy-current parameters, one or more target values of the one or more eddy-current parameters;
- and
- calibrating the eddy-current field based on the eddy-current field model with the one or more target values of the one or more eddy-current parameters.
Dependencies are inferred from the claim text.